Abstract
Most of the reports on electroluminescence (EL) in insulating polymers deal with divergent field configuration which is well suited to correlate EL with material ageing. However, a deeper insight into excitation and relaxation mechanisms necessitate a more refined analysis which can only be done if more signal is collected. This can be achieved in EL experiments under uniform field configuration by using polymer films with semi-transparent metallic electrodes. In this work, we investigate two polymers, polyethylene (PE) and polyethylene naphthalate (PEN), belonging to two technically important families: polyolefins and aromatic polyesters.
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